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MCA and QinetiQ proprietary

Results of the electromagnetic investigations and assessments of marine radar,
communications and positioning systems undertaken at the North Hoyle wind farm
by QinetiQ and the Maritime and Coastguard Agency

List of contents

 Administration Page
 Executive Summary
 List of figures
 Acronyms and Abbreviations
1 Introduction
 1.1 Background
 1.2 Objectives
 1.3 Content
2QinetiQ GPS trials
 2.1 Overview
 2.2 Results
 2.3 Summary
3QinetiQ VHF communications
 3.1 Overview
 3.2 Results
 3.3 Summary
4MCA VHF communications trial
 4.1 Overview
 4.2 Results
5QinetiQ radar trials
 5.1 Overview
 5.2 Radar clutter trial results
 5.3 Radar shadow trial results
 5.4 Summary
6MCA Radar trials
 6.1 Overview
 6.2 Small vessel radar evaluation
 6.3 Results of the trials
 6.4 Principles of range and bearing discrimination testing
 6.5 Range discrimination test one
 6.6 Range discrimination test two
 6.7 Bearing Discrimination
 6.8 Down and across range target discrimination
 6.9 Side lobe, reflected and multiple echoes
 6.10 Further side lobe, reflected and multiple echoes identification
 6.11 Sea and rain clutter within the wind farm
 6.12 MCA tests on the effects of wind farm structures on shore based radars
 6.13 Mobile radar at higher location
 6.14 BHP Billiton radar
 6.15 MCA larger vessel radar detection and ARPA evaluation
 6.16 Results of the Trials
7MCA navigation system trials
 7.1 The Global Positioning System (GPS)
 7.2 Magnetic compasses
 7.3 Loran C Trial
 7.4 MCA helicopter search and rescue systems
 7.5 Effects of wind farm structures on non type tested radar, communications and navigation equipment
8Conclusions and recommendations
 8.1 MCA trials
 8.2 QinetiQ trials
 8.3 Summary
ARYA letter
BRadar specifications
 B.1 Environment Agency radar (mounted in Ford Transit van)
 B.2 Mersey class lifeboat radars
 B.3 BHP Billiton Gwaenysgor Radar (ashore above Prestatyn)
 B.4 M.V. "Norbay"
 B.5 Mersey Docks and Harbour Board Port Radar
CRules extracted from the International Regulations for Preventing Collisions at Sea
 C.1 RULE 6 Safe Speed
 C.2 RULE 7 Risk of collision
 C.3 RULE 19 Conduct of vessels in restricted visibility
 References